Professor X-Sums
byDr Logic
More from Dr Logic
- Killer cages
- Kropki dots
- Arrows
- Palindromes
- Odd and even cells
The brief
Normal sudoku rules apply. Digits in a grey circle must be odd. Cells seperated by a black dot must be in a 1:2 ratio Cells seperated by a white dot are consecutive Cells along a grey line form a palindrome. Cells along an arrow must sum to the digit in the circle at the end. Cells in a cage must sum to the clue in the top left of the cage, with no repeats. Cells on a grey square must be even.